02 · iOS · App Store review

RepFern练芽

Commit the workout. Keep the record on your device, in a world drawn by hand.

Submitted to the US App Store on 2026-10-04

A bilingual workout log, shown here in Chinese, with Sprout and a garden that grows as you keep showing up.

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The product

Every card corner is asymmetric on purpose. A machined corner reads as software.

It logs what happened, not what is planned. Two taps, last time prefilled, natural language accepted. Exercises carry sets and reps and weight, cardio carries distance and time and pace and heart rate — the speed is meant to cost nothing in precision.

Everything lives in on-device SQLite. There is no account to make and no server to trust. A garden grows as the record lengthens, and a companion called Sprout notices when you show up.

The design system is where this one is unusual. Every card radius is asymmetric on purpose — 32px 36px 30px 34px for the hero tier — because a machined corner reads as software and a drawn one does not. Filled buttons are a face over a darker edge, and the lightness gap between them is held constant so a press keeps its depth.

Current edge

What is unfinished, and what comes next.

1.7.0 (build 21) was submitted to the US App Store on 2026-10-04 and was still waiting for review on 2026-10-21. It is free and set to manual release, so nobody can download it yet. The preview site at fnh.supwil.com runs on demo data. A 备案 filing is required before a public release on the China App Store and has not been made, and Android comes later. The companion chat in this build runs on local rules with no model access. Cloud sync is Phase 3 and has not started, so everything is on-device today.

A character from the product

“You showed up. The record stayed, and the garden kept growing.”

Sprout · Companion · in the gardenDrawn and imagined, never a customer quote.

A question about RepFern · 练芽?Write to the studio ↗

Product images